package cn.example.util.annotation;

import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * 主键标识
 * Created by WuYB on 2017/11/17.
 */
@Target(FIELD)
@Retention(RUNTIME)
public @interface PrimaryKey {

}
